A POLICE investigation into Neil and Christine Hamilton's alleged involvement in a sex attack will go on, Scotland Yard said yesterday.

Speculation was mounting that inquiries would be shelved after a call was traced to Mrs Hamilton's mobile phone on the day of the alleged rape and sexual assault.

Mr Hamilton claimed he and his wife were "wholly vindicated" after detectives traced the call.

But a Scotland Yard spokeswoman said: "The investigation goes on and inquiries continue."

The emergence of the mobile phone call came as the Hamiltons' accuser, Nadine Milroy-Sloan, 27, was again being interviewed by detectives.

She attended an appointment to speak to police in Ilford, Essex.

The mother-of four has accused the Hamiltons of sexually degrading her while another man allegedly raped her at a flat in Ilford at around 5pm.

The tracing of the mobile phone call showed that at around 5.40pm Mrs Hamilton's phone was 13 miles away from the scene of the alleged attack.

According to the couple's solicitor, Michael Coleman, shop till receipts place them in Chelsea at 3.24pm and they say they met friends for a drink at Claridges hotel in Mayfair at around 6pm.

Mr Hamilton yesterday demanded senior police officers confirm reports that the mobile phone call meant he and his wife were no longer suspects.

But Scotland Yard denied that the development meant they were going to shelve their investigation.

Mr Hamilton said the call had been made by his wife to her mother Megan.

He said: "She called her at around 5.44pm when we were on our way from our flat in Battersea to Claridges.

"It was probably just after we got into the car from the flat."

Ms Milroy-Sloan has now followed the Hamiltons into the public spotlight, insisting she has "nothing to hide".

She went on the offensive by waiving her right to anonymity at the weekend and claiming: "I am prepared to stand up and be counted." She told a Sunday newspaper: "The Hamiltons have accused me of hiding behind the right of rape victims to remain anonymous - but I want the world to know I have nothing to hide."

The allegations have clearly taken their toll on the Hamiltons.

Mrs Hamilton broke down in tears last week during a television interview and pulled out of a live broadcast on Friday claiming "physical and emotional exhaustion".

Following the emergence of the traced phone call yesterday, Mr Hamilton said: "There is absolutely no excuse for the police to deny this investigation, or at least our part in it, for a moment longer.

"There is also no reason for them to keep hold of our property any longer, especially our computer.

"I will be speaking to my solicitor about what action to take against the police."

Legal experts have said that if bankrupt Mr Hamilton were to successfully sue the police over wrongful arrest the money he got would be passed on to Harrods owner Mohamed Al Fayed to pay off debts from the "cash for questions" libel case.

However, Mrs Hamilton could be expected to win a six figure sum, legal experts said.